Memories from a 1957 Postcard Communication

Postcard dated June 19, 1957 from my grandfather, George L. Horton to my grandmother (Grandmommie) Ella Mae Horton.  PaPa's  note reads: Temple [Texas] Tues. June 19, 1957
Dear Ella and kids well I am feeling fine thay sure nice to me  I had 5 x-rays yesterday an 3 today  nice S.E. room on floor.  The Dr. said he was  (? positive ) it wasn't something else.  I will have to take insulin shots at most anything.  So it won't be so bad afterall.  Drive careful.  By love George.
Okay.  so the story is  this:  my grandfather worked for the Santa Fe Railroad in Cleburne, Texas and when you needed to go into the hospital you went to the Santa Fe hospital in Temple, TX.  My grandmother was a nurse at the time.  This was when they found out that he was diabetic.  Turns out he was a "brittle diabetic"  (extremely difficult to control his blood sugar level).  He sent her this postcard to let her know when to drive down to pick him up from the hospital.  You didn't pick up the phone and call someone in those days, it cost money.  A postcard and a 1 cent stamp was cheaper.
So, I just spent the last 30 min. or so looking at the old photo album.  The obituary from the Cleburne newspaper doesn't give the date (or it was cut off) but, PaPa died in 1959 (?)  I remember that I was 5 years old and in a car parked in the Santa Fe hospital parking lot late at night and my mother came out to the car crying and said that "Daddy passed away".  My uncle was sitting with me and my little brother, sister and cousins in the car.  It was warm and the windows were down.  Must have been summer.
That's the way it was in those days.